getUrl="https://api.weixin.qq.com/cgi-bin/open/bind?access_token="

getUrl = WxMiniConfig.BIND_PLATFORM+authorizer_access_token;
object = new HashMap<>();
object.put("appid", authorizer_appid);
object.put("open_appid", wxPlatformAppid);
result = httpsRequest.doPost(getUrl, JSON.toJSONString(object))
authorizer_appid和authorizer_access_token是授权之后获取的数据

返回的data：

open_appId：wxeb0fe05c5b11cab8